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In Reply to: RE: Russian 6C33C A Ticking Tube? posted by drlowmu on April 20, 2015 at 13:34:23
I am not tapping the glass. It's the clicking sound emitting from the 6C33C tube as it heats up in the initial power up. Same clicking can be heard from the tube as it cools down.
The internal graphite structure of this tube is quite substantial and it has dual heater elements so it runs hot. It seems to me like the internal of the tube is laterally expanding as it heats up and retracting as it cools down.
Follow Ups:
=The internal graphite structure of this tube is quite substantial and it has dual heater elements so it runs hot.=
- There is no graphite elements inside of 6c33c tube .
=It seems to me like the internal of the tube is laterally expanding as it heats up and retracting as it cools down.=
- Most likely that is the main reason for producing of that ticking sound .
__
"Art which does not have the appearance of art is true art."
- Old Roman saying -
Yes, it's my bad I was thinking it is Graphite. I looked closely and found it's some kind of thick metallic plates adjoining around the heaters. It's nothing like the graphite or the thin metal plate found on the other tubes.
I suppose this gives quite a heft to the weight of the tube but I also think it's more susceptible to the heating and cooling effects inside the tube. Other than the annoying ticking / clicking sound, it's quite a well made tube so I think the subsequent heating and cooling will not damage this tube at all even if it goes on for another 100 year. But the tube life is around 2000-3000 hours or even less in some cases so I guess they are expected to get tossed out sooner than later.
I am approaching ~8000 hours on the current pair that I run, and they are still going strongly.
!
The Mind has No Firewall~ U.S. Army War College.
That's definitely interesting and possible. I've been reading up about these tubes. I once read about someone saying The Gm on this tube increases and as it gets older and it's the time that this needs to get replaced.
I am sure it won't get destroyed or anything after first few thousands of hours.
I appreciates if you and someone can shed more insights on this particular subject.
I would change out the tube. First check the sockets, though. If Chinese made they are notorious for failure. Ticking, the mechanical type is an indication that something is loose inside the glass. A grid post, perhaps a cathode. I consider ticking a time bomb and would get a spare regardless.
Yes, it's what I thought initially and changed out the tube with the new ones. I have a few extra New ones so it's easy enough to investigate.
But I can hear the ticking with the new tubes in the old socket. So, I listened closely (these tubes becoming hot very fast) and I am not sure that clicking is from the tubes or the sockets. I am going to replace the sockets too but I am wondering if anyone else have the same experience with the ticking sound from this tube.
Do the sockets hold the tube pins tightly/ in other words if you tip the amp 9 off, of course) does the tube easily slide out/ if so you do hve an issuewith the socket
Yep the Russian 6C33C tube frequently click when warming up and after shutting down. Mine have been doing it for the last 5 years. Amp is a headphone Eddie Current Zana Deux. Fabulous amp with Senheisser 800 headphones.
David, Thanks for confirming the clicking / ticking sound from your 6C33C tube during warming up and after shutting down.
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